Equations et systèmes différentiels linéaires

Logiciel SINGULAR PERTURBATIONS :

This software is designed for the computation of formal basis of singularly perturbed differential equations. Its main feature is to determine the

outer and the inner expansions which span the set of solutions. Similarly to the case without parameters studied by J.P Ramis, it is based on

Newton-Puiseux polygon techniques : exponential factors are given by algebraic equations and the "stretching" times by the positive slopes

of a plane convex hull.

- The Maple package has been written by Yann Macutan
[More information] Logiciel ISOLDE (Integration of Systems of Ordinary Diffrential Equations) :

The package ISOLDE written in the computer algebra system Maple V.4 contains functions for the symbolic resolution of systems of ordinary linear differential equations.

- The Maple package has been written by M.A Barkatou and E. Pflugel
[More information] Logiciel DESIR II :

This package computes formal solution of homogeneous linear ordinary nth order differential and difference equations in the neighbourhood of a complex point. It is implemented in the computer algebra system Maple V.4.

- The Maple package has been written by M.A Barkatou and E. Pflugel
[More information]